For the same reason why people eat any other animal. One may argue that dogs are simply to intelligent to be eaten, but in all reality, pigs are smarter than dogs, yet we eat them all the time. It doesn`t mean you HAVE to eat dogs.
Swedish people like to eat meatballs, potatoes with lingonberry jam. Older people also enjoy talking about the weather, and the younger generations prefer to do sports, go to the movies, and get drunk at house-parties.